2003 Jeep Liberty Questions

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When driving my 2003 Jeep Liberty Sport the engine started revving, but the car only moved because of momentum. If I pull over and restart it is fine for 50-100' then does the same thing. I had to put it into 2nd gear to limp it in to the dealership. The engine light came on. The dealership claims it has 2 errors, one of which is error after shift, and needs a transmission. The car only has 100,000 miles on it, barely, and is regularly maintained.

Can't accelerate past 2000 rpm without smoke coming from tailpipe. The smoke becomes so thick I can't see traffic behind me

I have a coolant leak but I always keep some in it.

When I push down the 4x4 lever,it quiets down a little,and the part time light stays on all the time. Had a hard time taking it off of 4 wheel drive last time I used it,but the jeep runs good,just worried.

I have an03 liberty just replaced front passanger cv shaft and the new one keeps falling off the shaft comi g out of gear box plz help

I need diagram for the vacuum system Jeep Liberty 2003

has had diagnostics ran at dealership, couldn't find anything. Put new plugs and coil packs in and a week later shut it off after driving and tried to start again and wouldn't start

I took it home and it still wasn't working so I left it again and he said to
Hat the regulator was broken and wanted to charge me another 195.00 I feel that he trying to sucker me

I have codes coming up, a transmission code P0700, P1776,P0132 I think,the dealer said,I need a whole new harness.,it,is located behind the console costs too expensive right now to fix.Under Valve cover leaks oil.,what's wrong with jeep?It has just over 91,000 miles now.any advice?.Also,oxygen sensor I bought won't fit in engine,to replace it.,can't find right size either.